Package org.antlr.v4.analysis

Class LeftFactoringRuleTransformer

java.lang.Object

org.antlr.v4.analysis.LeftFactoringRuleTransformer

public class LeftFactoringRuleTransformer
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static enum	LeftFactoringRuleTransformer.DecisionFactorMode
protected static enum	LeftFactoringRuleTransformer.RuleVariants

Field Summary

Fields

Modifier and Type	Field	Description
GrammarRootAST	_ast
Grammar	_g
Map<String,Rule>	_rules
Tool	_tool
private final GrammarASTAdaptor	adaptor
static final String	LEFTFACTOR
private static final Logger	LOGGER
static final String	SUPPRESS_ACCESSOR

Constructor Summary

Constructors

Constructor	Description
LeftFactoringRuleTransformer(GrammarRootAST ast, Map<String,Rule> rules, Grammar g)

Method Summary

Modifier and Type	Method	Description
protected LeftFactoringRuleTransformer.RuleVariants	createLeftFactoredRuleVariant(Rule rule, String factoredElement)
protected GrammarAST	expandOptionalQuantifiersForAlt(GrammarAST alt)
protected boolean	expandOptionalQuantifiersForBlock(GrammarAST block, boolean variant)
protected GrammarAST	translateLeftFactoredAlternative(GrammarAST alternative, String factoredRule, boolean variant, LeftFactoringRuleTransformer.DecisionFactorMode mode, boolean includeFactoredElement)
protected boolean	translateLeftFactoredDecision(GrammarAST block, String factoredRule, boolean variant, LeftFactoringRuleTransformer.DecisionFactorMode mode, boolean includeFactoredElement)
protected GrammarAST	translateLeftFactoredElement(GrammarAST element, String factoredRule, boolean variant, LeftFactoringRuleTransformer.DecisionFactorMode mode, boolean includeFactoredElement)
void	translateLeftFactoredRules()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

LEFTFACTOR

public static final String LEFTFACTOR

See Also:

• Constant Field Values

SUPPRESS_ACCESSOR

public static final String SUPPRESS_ACCESSOR

See Also:

• Constant Field Values

LOGGER

private static final Logger LOGGER

_ast

public GrammarRootAST _ast

_rules

public Map<String,Rule> _rules

_g

public Grammar _g

_tool

public Tool _tool

adaptor

private final GrammarASTAdaptor adaptor

Constructor Details

LeftFactoringRuleTransformer

public LeftFactoringRuleTransformer(@NotNull
 GrammarRootAST ast,
 @NotNull
 Map<String,Rule> rules,
 @NotNull
 Grammar g)

Method Details

translateLeftFactoredRules

public void translateLeftFactoredRules()

expandOptionalQuantifiersForBlock

protected boolean expandOptionalQuantifiersForBlock(GrammarAST block,
 boolean variant)

expandOptionalQuantifiersForAlt

protected GrammarAST expandOptionalQuantifiersForAlt(GrammarAST alt)

translateLeftFactoredDecision

protected boolean translateLeftFactoredDecision(GrammarAST block,
 String factoredRule,
 boolean variant,
 LeftFactoringRuleTransformer.DecisionFactorMode mode,
 boolean includeFactoredElement)

translateLeftFactoredAlternative

protected GrammarAST translateLeftFactoredAlternative(GrammarAST alternative,
 String factoredRule,
 boolean variant,
 LeftFactoringRuleTransformer.DecisionFactorMode mode,
 boolean includeFactoredElement)

translateLeftFactoredElement

protected GrammarAST translateLeftFactoredElement(GrammarAST element,
 String factoredRule,
 boolean variant,
 LeftFactoringRuleTransformer.DecisionFactorMode mode,
 boolean includeFactoredElement)

createLeftFactoredRuleVariant

protected LeftFactoringRuleTransformer.RuleVariants createLeftFactoredRuleVariant(Rule rule,
 String factoredElement)